Oil-burner.



No. 735,287. f. PATENTED AUGL4, 1908 J. B. NEUENDORFF.

OIL BURNER. APPLICATION FILED JAN. 4, 1902.

:1 UNITED STA Patented August 4, 1903.

JOHN B. NEUENDORFF, or SAN ANTONIO, TEXAS.

OIL-BURNER.

SPECIFICATION forming part of LettersjPatent no. 735,287, dated-August4,1903.

Application filed January 4,1902. sesame. 88,455. (No model.) 1

To all whom it may concern.-

Be it known that I, JOHN B. NEUENDORFF, a citizen of the United States,residing at San Antonio, inthe county of Bexar and State of' Texas, haveinvented a new and useful Oil- Burner, of which the following is aspecifica-' tion. 1

This invention relates to oil-burners of. the injector type, and isdesignedto provide an; improved burner of this character wherein liquidfuel and steam are introduced and mixed in a novel and effective mannerwithin the mixing-chamber of the burner, soas to produce an intensefiameat the mouth of the discharge-nozzle.

Another object is to have the parts of the disposition of the flame, andthereby accom modate the burner to any application thereof.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as willbehereinaftermore fullydescribed, shown intheaccompanying drawings, and particularly pointedout in the appended claims, it being? understood that changes in theform, proportion, size, and minor details may be made within the scopeof the claims without departing from the spirit or sacrificing any ofthe.

advantages of the invention.

In the drawings, Figure 1 is a longitudinal sectional view of anoil-burner constructed and arranged in accordance with the presentinvention. Fig.2 is a longitudinal sectional view taken on the line 2 2of Fig. 1. Fig. 3 is a cross-sectional view taken on the line 3 3 ofFig. 1. Fig. 4; is a cross-sectional view taken on the line 4. 4. ofFig.- 1. Fig. 5is a detail cross-sectional viewof the burner-tip,

taken on the line 5 5 of Fig. 2. Fig. 6 isa detaillongitudinal/sectional view of a cylindrical burner-tip. Fig. 7 is adetail cross-sectional view takenon the line 7 7 of Fig. 6.

Like characters of reference designate corresponding parts in all thefigures of the draw lugs.

In carrying out the present invention there is provided a nozzle 1,embodying a tapered tubular casing which has its smaller end ex=ternally screw-threaded and provided with diametrically opposite notchesor seats 2, the

opposite larger and rear end of the body being provided withdaninteriorly-screw-threaded marginal flange 3, which has an angular outeredge to form a wrench-seat. j 1 y The rear end of'thebody or casing'isclosed by a head or cap 4, which is provided with anexternally-screw-threaded reduced cylindrical flange 5, which fits intothe interiorlyinto this screw-threaded opening and isof a length toproject a suitable distance into the body of the nozzle. It willhere benoted that the oil-nipple 8 lies at the longitudinal center of theburner. In the outer end of the cap and at the center thereof there isprovided a screw-threaded opening 9, which intersects the oil-passage 6in alinement with the nipple 8, so asto give access tothe latter forcleansing the same, and thisopening is normally closed by means of ascrewf threaded closure-pluglO, the outer end otwhichis made polygonal,so as to form a wrench-seat,

and normally projected beyond the cap, so that it may be readily removedwhen desired. Located-diametrically opposite the oil-inlet 6 is asteam-inlet 11, which is provided with a substantially U-shaped branchthe members 12 of which pierce the cap and lie at opposite sides of theoil-inlet. The outer end of each branch member 12 is open andinteriorl'y screw-threaded for the reception of a closure-plug 13,whereby access may be had to the interior of the branch for conveniencein cleansing the same. Steam-ports 14 pierce the cap orhead andintersect the inner sides of the respective steam inlet branches 12 indiametric alinement with the oil-nipple 8 and incline inwardly inopposite directions at corresponding angles'to the oilinlet, whereby therange of the ports intersect the range of the oil-nipple at a commonpoint. The ports 14 taper inwardly and are provided at their outer endswith tapered valve-seats 15, which are controlled by valves 16, carriedby screw-threaded valve-stems 17, that workin suitable stuffing-boxes18, which are removably fitted into sockets or recesses 19, formed inthe outer face of the head or cap and intersecting the respectivesteaminlet branches 12. Each valve-stem is provided with a hand-wheel 20for convenience in manipulating the valve to open and close thesteam-port.

As best shown in Figs. 1, 2, and 5, it will be seen that the dischargeend of the burner is provided with a burner-tip 21, which is providedwith an internally-screw-threaded cylindrical flange 22 to fit theexternally-screwthreaded smaller end of the mixing-chamber and has apolygonal external portion 23 to form a wrench-seat for convenience inapplying and removing the tip. This tip is flat and tapered outwardly,so as to form a thin slot-like discharge-opening, and thereby produce afan-shaped flame. In addition to this the inner faces of the tip havetheir opposite portions inclined inwardly in opposite directions, asbest illustrated in Fig. 5, so as to form opposite centrally-disposedlongitudinal ribs 2 from which the opposite faces diverge, and therebytend to spread the fuel and prevent the same from collecting in a smallstream at the center of the tip.

In order that the steam and oil may be effectively mixed before enteringthe burnertip, there is provided a mixer comprising a stem 25, havingits inner end provided with a rounded or convex head in the form of aball or sphere 26, and upon the opposite end portion of the stem areprovided spiral blades or flanges 27, the outer ends of which areprovided with outwardly-directed lugs or projections 28, which aresnugly fitted in the seats or recesses 2 in the outer end of themixing-chamber 1 and are held against displacement by the inner end ofthe burner-tip, which lies against the lugs and is fitted in place afterthe insertion of the mixer. It will here be noted that the interior ofthe mixing-chamber is straight or cylindrical at its outer end, asindicated at 29, for a length equal to the length of the flanged portionof the mixer-stem, so that the outer edges ofthe spiral flanges may fitsnugly against this cylindrical portion, and thereby compel the steamand oil to travel in a circuitous path, and thereby become thoroughlymixed before entering the burner-tip.

In practice it is preferable to have the burner assume an uprightposition, with the tip at its lower end, so that the oil or liquid fuel,which is fed through the nipple 8, may strike squarely against thebeveled deflector formed by the ball 26, whereby it is broken up intosmall particles, which are attacked by the incoming steam-jets, theranges of which intersect at a point beyond the oil-deflector 26. Henceit is apparent that the oil and steam are thoroughly mixed in passingthrough the mixer, and thereby enter the burner-tip in the mosteffective condition for ignition at the outer end of the tip.Furthermore, in view of the transverse wedge shape of the opposite sidesof the tip the fuel is efiectively spread so as to overcome any tendencyto collect in a swirl at the center of the tip, and thereby insure afan-like distribution of the fuel from the burner-tip.

A very important feature of the present invention resides in thecombination and arrangement of the steam-inlets 14:, the fuel-inlet, andthe mixer. In this connection it will be noted that the spiral flangesof the mixer are two in number and cooperate with the walls of themixing-chamber to form two separate and distinct passages, which areopen at opposite ends, and the steam-inlets, which are two in number,are arranged to discharge toward the inner ends of the passages. Thefuel-inlet is located between the steaminlets, and a centrally-arrangedoil-deflector is located at the inner end of the mixer and is interposedbetweenthe same and the fuelinlet.

The tip may be rotatably adjusted, so as to vary the diametricdisposition of the flat tip, by inserting one or more washers 30 betweenthe rear end of the tip and the outer end of the mixing-chamber, wherebythe disposition of the flame may be adjusted to accommodate the burnerto any particular adaptation thereof.

In some instances a fan-shaped flame may IOC not be desired, andtherefore it is designed to i provide the burner with a cylindrical tip,as indicated at 31 in Figs. 6 and 7 ofthe drawings, whereby the forms oftips may be interchangeably applied to the burner, so as to adapt thelatter to the existing circumstances surrounding the same.

An important feature of the present burner resides in the fact that thespiral mixer is arranged in a cylindrical portion of the mixingchamber,so that the spiral. passage formed thereby is not contracted, thereby toprevent choking of the fuel in the passage, the desired contraction ofthe discharge-passage being had by contracting the bore of the nozzle,which is fitted to the outer end of the mixingchamber.

What I claim is- 1. An oilburner, comprising a mixingchamber, aburner-tip at one end thereof, a

cap or head closing the opposite end of the chamber, a fuel-inletcentrally piercing the cap or head, steam-inlets piercing the cap orhead at opposite sides of the fuel-inlet and projected outwardly throughthe cap or head.

2. In an oil-burner, the combination with a tubular casing which has atruly cylindrical 1 discharge end, of a mixer fitted into the dischargeend of the casing and embodying a central stem and spiral flangescarried thereby with their outer edges snugly fitting the inner walls ofthe discharge end of the casing and forming open-ended circuitouspassages,

. a fuel-inlet projected through the rear end of the casing and disposedto discharge centrally against the inner end of the mixer, andsteaminlets located at opposite sides of the fuel-inlet and inclinedinwardly to discharge their steam-jets toward the inner ends of thecircuitous passages of the mixer.

3. An oil-burner, comprising a mixing.

chamber, a burner-tip at one end thereof, a cap or head at the other endof the chamber, a central fuel-inlet piercing the cap or head, asteam-inlet having branches lying transversely at opposite sides of thefuel-inlet,

- steam-ports communicating transversely between the branches and theinterior of the chamber, valves for the ports, and handled valve-stemsprojected transversely through the branches. 1

4:. An oil-burner, comprising a mixingchamber, a head or cap at one endthereof, a fuel-inlet piercing the cap or head, a steaminlet extendingtransversely across the head and having opposite open ends, and aremovable closure-plug for one end of the steaminlet to afford access tothe interior thereof.

5. An oil -'burner, comprising a mixingchamber having a head or cap atone end, a central fuel-inlet piercing the cap or head, a steam-inlethaving branches extending transversely across the head at opposite sidesof the oil-inlet and open at their outer ends, removable closures fittedto the open ends of the branches, and steam-ports extending between thebranches and the interior of the chamber.

6; An oil-burner, comprising a mixingchamber, a capor head at one endthereof, a transverse fuel-inlet extending across the head and having alateral branch piercing the same, a transverse steam-inlet locatedopposite the fuel-inlet and having branches lying at opposite sides ofthe fuel-inlet and provided with open outer ends, removable closures forthe branches, ports communicating transversely between the steam-inletbranches and the interior of the mixingchamber, valves for the ports,and handled stems for the valves.

i 7. An oil-burner, comprising a mixingchamber having a cap or headprovided with a central perforation, a removable closure for the outerend of the perforation, a transverse fnel-inlet intersecting theperforation,

a transversesteam-inlet located opposite the l fuel-inlet and providedwith branches lying of the' chamber and inclined toward the range of thefuel-inlet, valves for the ports, and handled stems forthe valves.

8. An oil-burner, having its mixing-chamber provided with aninternally-cylindrical portion, a mixer therein, comprising a stemprovided with a ball at its inner end to form a deflector, and a spiralflange extending from a point substantially midway between the ends ofthe stem to the outer end thereof, the outer edge of the flange snuglyfitting the wall of the mixing-chamber, steam and fuel inlets disposedto discharge against the mixer, and a nozzle fitted to the outer end ofthe mixing-chamber and having a tapered bore.

9. An oil-burner, having a mixing-chamber provided with an internalcylindricalportion, a mixer fitted therein and comprising a stem havingan oil-deflector at its inner end, and spiral flanges embracing the stemwith their outer edges fitting snugly the internal cylindrical portionof the mixing-chamber, and steam and fuel inlets disposed to dischargeagainst the mixer.

10. An oil-burner, having a mixing-chamber provided in its outer endwith sockets or seats, a burner-tip removably fitted to the socketed endof the chamber, and a mixer located within the chamber and having lugsor 11. An oil-burner, having a mixing-chamber, a burner-tip removablyfitted thereto, and a spiral mixer located within the mixingchamber andhaving portions clamped between said chamber and' the bnrner-tiip tohold the mixer in position.

12. An oil-burner, having a mixing-chamber which is provided in one endwith internal sockets or seats, a burner-tip removably fitted to thesocketed end of the chamber, and a mixer embodying astem, spiral flangesembracing the stem, and outwardly-directed lugs or projections carriedby the outer ends of the flanges and fitted in the seats or recesses.

13. In an oil-burner, the combination of a mixing-chamber having itsforward end made internally cylindrical and provided with internal edgesockets or seats, acap or head removably fitted to the other end of thechamthe cap, a nipple piercing centrallythe inner side of the cap and incommunication with the fuel-inlet, a transverse steam-inlet locatedopposite the fuel-inlet and having branches lying at opposite sides ofthe fuelinlet and provided with open outer ends, removable closures forthe open ends of the branches, ports extending between the steaminletbranches and the interior of the chamber andinclined toward the nipple,valves cating between the branches and theinteri'or ICO projections tofit within the sockets or seats.

ber, a transverse fuel-inlet extending across for the ports, handledstems for the valves, a

mixer-stem having its inner end provided with a deflector, spiralflanges carried by and embracing the stem with their outer edges fittingsnugly a cylindrical portion of the mixing-chamber, lugs or projectionscarried by the outer ends of the flanges and fitted in the sockets orseats of the mixing-chamber, and a removable burner-tip applied to thesock-

